test: unit tests case for p1

internal/2015/DayTwelve/code_test.go

@@ -0,0 +1,29 @@
+package daytwelve
+
+import "testing"
+
+func TestPartOne(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected int
+	}{
+		{"[1,2,3]", "[1,2,3]", 6},
+		{"{\"a\":2,\"b\":4}", "{\"a\":2,\"b\":4}", 6},
+		{"[[[3]]]", "[[[3]]]", 3},
+		{"{\"a\":{\"b\":4},\"c\":-1}", "{\"a\":{\"b\":4},\"c\":-1}", 3},
+		{"{\"a\":[-1,1]}", "{\"a\":[-1,1]}", 0},
+		{"[-1,{\"a\":1}]", "[-1,{\"a\":1}]", 0},
+		{"[]", "[]", 0},
+		{"{}", "{}", 0},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := PartOne([]string{tt.input})
+			if got != tt.expected {
+				t.Errorf("PartOne() = %d, want %d", got, tt.expected)
+			}
+		})
+	}
+}